期刊
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
卷 120, 期 6, 页码 2505-2523出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2014JD022121
关键词
storm convective outflow; biomass burning emission ratios; acrolein; hydrogen cyanide (HCN); acetonitrile (CH3CN); deep convective cloud and chemistry experiment (DC3)
资金
- National Science Foundation
- Div Atmospheric & Geospace Sciences
- Directorate For Geosciences [1063578] Funding Source: National Science Foundation
- Div Atmospheric & Geospace Sciences
- Directorate For Geosciences [1063463] Funding Source: National Science Foundation
As part of the Deep Convective Cloud and Chemistry (DC3) experiment, the National Science Foundation/National Center for Atmospheric Research (NCAR) Gulfstream-V (GV) and NASA DC-8 research aircraft probed the chemical composition of the inflow and outflow of two convective storms (north storm, NS, south storm, SS) originating in the Colorado region on 22 June 2012, a time when the High Park wildfire was active in the area. A wide range of trace species were measured on board both aircraft including biomass burning (BB) tracers hydrogen cyanide (HCN) and acetonitrile (ACN). Acrolein, a much shorter lived tracer for BB, was also quantified on the GV. The data demonstrated that the NS had ingested fresh smoke from the High Park fire and as a consequence had a higher VOC OH reactivity than the SS. The SS lofted aged fire tracers along with other boundary layer ozone precursors and was more impacted by lightning NOx (LNOx) than the NS. The NCAR master mechanism box model was initialized with measurements made in the outflow of the two storms. The NS and SS were predicted to produce 11 and 14ppbv of O-3, respectively, downwind of the storm over 2days. Sensitivity tests revealed that the ozone production potential of the SS was highly dependent on LNOx. Normalized excess mixing ratios, X/CO, for HCN and ACN were determined in both the fire plume and the storm outflow and found to be 7.00.5 and 2.30.5pptvppbv(-1), respectively, and 1.40.3pptvppbv(-1) for acrolein in the outflow only.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据